Method of cutting plates, pipes, &amp;c.



No. 831,078. PATENTBD SEPT. 18, 1906. F. .TOTTRAND. METHOD OF CUTTING PLATES, PIPES, m,

APPLICATION FILED AUG. 22. 1905 id 1; v w

f 22871152 21%;? mf mm UNITED STATES;

PATENT OFFICE.

FELIX JOTTRAND. OF UOCLE, BELGIUM. ME'II'HOD F ourrme. PLATES, PIPES, ac.

Specification of Letters Patent. agplioation filed August 22,1906. Serial No. 276,207.

Patented Sept. 18, 1906.

Toall whom it may concern;

Be it known that I, FELIX JoT'rRsNmengineer, a subject of the Kingof Bel 1 um, residing at Ucole, near Brussels, in t e Kingdom of Belgium, have invented new and use-' ful Improvements in a Method of Cutting Plates, Pi es, and other Metal Articles, of which the ollowing is a s ecification.

This invention has re erence to a method of cutting plates, pipes, and other metal articles and it has for its object to enable such articles, particularly those of iron or other readily-oxidizable metal, to be out almost instantaneously.

The method consists, broadly, in heating the object to be out along the line of section by means of a blowpipe of any appropriate k1ndsuch as an oxyhydrogen, oxyacetylene, or analogous blowpipeand to simultaneously direct upon the said line at a certain distance from the jet of 'the heating-blowpipe a jet of 0 gen under pressure to effect fie object by chemical action the cutting of upon the heated part, the metal being raised to such a temperature as to enable oxidation to take place rapidly without fusion of the metal, while the oxide, which are more fusible than the metal itself, flow readily and the severance. is perfectly metal had been sawed.

In 1ipractice the process may be carried out in d' erent manners and b means of different appliances-for examp e, by means of an ordinary ox hydrogen-b owplpe having a second noz e arranged and regulated alppropiiately in relation to its heat-ing-nozz e.

In til i annexed drawings, Figure 1 shows a blowpipe adapted to carry the process into practice. F' s. 2, 3, and 4 show an apparatus partic ar-ly adapted to cut orifices or holes of a regular contour. Fig. 2 is a side view'of the apparatus. Fig. 3 shows a declean, as though: the

tail, and Fig. 4 shows the apparatus used for cutting a hole in a ipe.

' desire When the work oes not re uire any great amount of precision or when t e contours to be out are relatively complicated, an ordinary blo ipe 1 Fig. 1,..may be employed provide with separate inlets 2 3 for the oxygen and hydrogen opening into a mixing-chamber 4, provided with a nozzle 5, directing" a" heatin -jet 7 upon the object 6 which it is to out. To. this b owpipe 1 is fixed a special conduit 8, conducting oxygenun or holes of a re u-larcontour-as, for example, of circular orm-I may employ ap aratus comprising a frame 11, upon which the object 6 to be out is (placed, Figs. 2 to 4. To this frame is secure laterally a support 12,' through which passes a rod 13, the height of which may be altered at will by means of a small pinion, actuated by a crank 14 and engaging in a rack 15, out in said rod 13. This ro I 13 carries on an arm 16 an adjustable screw-threaded rod 17, terminating in a center point 18, intended to rest upon the article to be treated and to determine the center of the orifice to be cut. Upon this rod 17 is mounted a'tube ,20, freely rotatable between two collars 19 and havin arms 21 carr g a tube 22, through whic passes a r0 23, carrying at its lower part a su ort 24, upon the sides of which are two sli a le plates 26, Whose position upon said support 24 can be fixed by set-screws 27, passing throu h slots 28. One of the filates25 carries t e heating-nozzle 29 and t e other, 26, the cold or oxygen nozzleSO, said no'zzles being fixed to the ends of metal pipes 31, connected with flexible tubes 32, one of which supplies the mixture of oxygen and h dro on to the heating-nozzle 29 and the ot or t e oxygen to the cold nozzle 30. j

The aforesaid support 24 may be provided with a guide-roller 33, carried by a rod 34,

entering a guide fixed to the support 24,

a pin 38, slidingrin the tube 22. he (pin 37 carries arocking lever 40, the free en 41 of which engages neath a pin 42, fixed upon aforesaid ro-,

tatable tube 20 in such a manner that it is onlynecessary to exert pressure upon the rocking lever 40 to depress the supportingrod 23 in opposition to its s rin and thus cause the roller.33 to rest on t e o ject which is to be cut. The apparatus as a whole is then able to rotate around the screw-threaded rod 17 while the roller 33 travels over the Work 6. It is thus only necessary to regulate I all kinds, the osition of the nozz es 29 30 bethe position of the slidable plate 26 rela tively to the center of the orifice to be cut in order to exactly fix the radius of said orifice. The distance oithe nozzles 29 30 fromthe work may be exactly regulated by adjusting the height of the roller. The apparatus being ready to operate and the supporting-rod 23 being. depressed by its lever in such manner as to cause the roller 33 to rest upon the work, it is only necessary to cause the apparatus as a whole to rotate slowly around thescrew-threaded rod 17 and cause the nozzles to describe a circle around the point 18 in order to cut'uniformly a circle of the desired diameter.

- The apparatus lends itself to 0 erations of ing capable o adjustment at will by the simple displacement of the slidable plates 25 26. The lifting and lowering of the nozzles 29 30 permit of eiiecting the cutting not only in one and the samehorizontal plane,'but also in any given directionas, for example, when cutting holes in tubes and shaping ends of tubes to correspond with such openings. Fig. 4 shows the use of the apparatus for cutting a hole ina pipe or tube. In such case the tube 6 would be placed in the recess in the frame 11 and support the center point 18, the blowpipes rotatin around this point 18 and being raised and owered at the proper moment in the way above indicated.

Having thus described my inventiomwhat I claim is j 1. The method or cutting plates, pipes and other metal articles consisting in heating the object to be cut and directing upon the heated part an oxidizing-jet.-

- 2; The method of cutting plates, pipes and other metal articles consisting in directing upon the object to be cut a suitable heating- 7 jet and an independent oxidizing-jet.

3. The method of cutting plates, pipes and other metal articles consisting) in directing a heating-jet upon the object to v e out, upon the line of section and an inde endent oxidizingjet at a distance from t e heating-jet and displacing both jets along the line of section.

4. The method of cutting plates, pipes and other metal articles consisting in directinga heating-jet upon the object to be cut, along the line of section so as to raise the metal to .a temperature enabling oxidation without fusion of the metal and in directing simul-- taneously upon the heated part of the obsimultaneously both jets along the line of sec- 7 tion.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FELIX JOTTRAND. Witnesses:

MAURICE GERBEAULT, Y GREGORY PHELAN. 

